Hi,
my names Harry and I am from Germany. Two weeks ago I bought a TB180FR which should help building my daughters house.
We had 1 full day and another 1/2 day of work without any trouble then the TB180 developed some strange things. When the key is turned in the ACC position the control lamps for speed, glow circuit and deceleration start flickering as is the lamp in the auto decel button and the warning buzzer starts chirping. If you start the engine and have choosen a higher speed the deceleration circuit starts pulling on the throttle cable and as a result the enging is revving up and down. If I but the engine speed dial to low it stays in idle but the mentioned warning lamps and the relais for ther decel circuit , the relais for the 4th aux circuit and the valve for the speed are klicking.
I can say I checked everything I could think of: GND problems, potential differences, voltage drops, cable breaks, harness problems, shorts, the whole nine yards. I am an electronic engineer so I know a thing or two about that. I am also working for Bosch Rexroth and our company is in a lot of well known brands of heavy equipment. We have valves, pumps, motors, controllers so I am quite familiar with the standard equipm. of an excavator.
I could not find any problem. Everything points towards the internal controller for all the safety an instrument cluster functions. I read the manuals, studied the electric / hydraulic circuits
and the problem got worse.. it comes and goes. Last situation is the problem did disappear, the TB180 was ok and idling for about 15min and then suddenly without any action ( nobody was on the machine...) the problem appeared again. I attach some pics. Did somebody every experience a similar behaviour?
best regards from Germany
cheers
Harald
my names Harry and I am from Germany. Two weeks ago I bought a TB180FR which should help building my daughters house.
We had 1 full day and another 1/2 day of work without any trouble then the TB180 developed some strange things. When the key is turned in the ACC position the control lamps for speed, glow circuit and deceleration start flickering as is the lamp in the auto decel button and the warning buzzer starts chirping. If you start the engine and have choosen a higher speed the deceleration circuit starts pulling on the throttle cable and as a result the enging is revving up and down. If I but the engine speed dial to low it stays in idle but the mentioned warning lamps and the relais for ther decel circuit , the relais for the 4th aux circuit and the valve for the speed are klicking.
I can say I checked everything I could think of: GND problems, potential differences, voltage drops, cable breaks, harness problems, shorts, the whole nine yards. I am an electronic engineer so I know a thing or two about that. I am also working for Bosch Rexroth and our company is in a lot of well known brands of heavy equipment. We have valves, pumps, motors, controllers so I am quite familiar with the standard equipm. of an excavator.
I could not find any problem. Everything points towards the internal controller for all the safety an instrument cluster functions. I read the manuals, studied the electric / hydraulic circuits
and the problem got worse.. it comes and goes. Last situation is the problem did disappear, the TB180 was ok and idling for about 15min and then suddenly without any action ( nobody was on the machine...) the problem appeared again. I attach some pics. Did somebody every experience a similar behaviour?best regards from Germany
cheers
Harald
